JP2021006002A - Pre-harvest processing device for corn harvester - Google Patents

Abstract

To provide a pre-harvest processing device for a corn harvester that facilitates the maintenance of latching/transport devices.SOLUTION: This pre-harvest processing device is provided with: left and right latching/transport devices 15 that latch onto and transport corn bunch bodies rearward; left and right harvesting rolls 16 provided below the latching/transport devices 15, the left and right harvesting rolls 16 performing a downward pulling action from both the left and right sides on planted stalks guided into a transport path between the left and right latching/transport devices 15, thereby separating the corn bunch bodies from the planted stalks; left and right cover members 11 provided above the latching/transport devices 15, the left and right cover members 11 covering the latching/transport devices 15 from above; and left and right dividers 12 provided in a state of connecting to the front end parts of the cover members 11 and projecting toward the front side of the latching/transport devices 15, the left and right dividers 12 introducing the planted stalks into the transport path. The dividers 12 are configured so as to be capable of changing their posture into a use posture where they are positioned forward of the cover members 11 and a storage posture where they are positioned above the cover members 11.SELECTED DRAWING: Figure 8

Description

The present invention relates to a pre-harvest treatment apparatus for a corn harvester.

Conventionally, as a pre-harvest treatment device for a corn harvester, for example, the pre-harvest treatment device for a corn harvester described in Patent Document 1 is known. In the pre-harvest processing device of the corn harvester described in Patent Document 1 (“harvesting portion [12]” in the document), the left and right locking transfer devices (in the document, the corn tufts are locked and conveyed rearward). "Endless transport chain [16]") and a planting stem that is provided below the locking transport device and is introduced in the transport path between the left and right locking transport devices, acts to pull down from both the left and right sides. Left and right harvest rolls (“harvest rolls [15]” in the literature) that separate the corn tufts from the planted stems, and left and right that are provided above the locking transport device and cover the locking transport device from above. The left and right dividers (in the literature, "divider [14]], which are provided in a state in which the cover member of the above and the front end portion of the cover member are continuously projected to the front side of the locking transport device and introduce the planted stalk into the transport path. ") And is provided.

JP-A-2018-68146

In the pre-harvest treatment apparatus for the corn harvester described in Patent Document 1, since the front portion of the locking transport device is covered from above by a divider, maintenance of the locking transport device cannot be easily performed.

In view of the above situation, there is a demand for a pre-harvest treatment device for a corn harvester that can easily maintain the locking transfer device.

The feature of the present invention is a transport path between the left and right locking transport devices for locking and transporting the corn tufts rearward and the left and right locking transport devices provided below the locking transport devices. The left and right harvest rolls that separate the corn tufts from the planted culms by pulling down from the left and right sides of the planted culms introduced into the plant, and above the locking transport device. The left and right cover members that cover the locking transport device from above, and the front end portion of the cover member are provided so as to project forward from the locking transport device, and the planting culm is transported. The left and right dividers to be introduced into the route are provided, and the divider is configured to be able to change the posture between a usage posture located in front of the cover member and a retracted posture located above the cover member. is there.

According to this feature configuration, the front portion of the locking transfer device is opened by changing the posture of the divider from the used posture to the retracted posture. This makes it easy to reach the front part of the locking transfer device when maintaining the locking transfer device. That is, it is possible to realize a pre-harvest processing device for a corn harvester capable of easily performing maintenance of the locking transfer device.

Further, in the present invention, the divider can change its posture between the used posture and the retracted posture by swinging up and down around a swinging axis extending in the left-right direction with the rear portion of the divider as a fulcrum. It is preferable that it is configured.

According to this feature configuration, it is possible to easily configure a configuration in which the divider can be changed into a usage posture and a retracted posture by a simple configuration in which the divider is swung up and down at a rear fulcrum. Further, if the front end portion of the divider touches the field during the harvesting operation, the divider will rise and swing at the rear fulcrum. This makes it possible to prevent the divider from plunging into the field during the harvesting operation.

Further, in the present invention, it is preferable that the divider is in contact with the upper surface of the cover member from above in the retracted posture.

According to this feature configuration, in the retracted posture, the moving range of the divider from the used posture to the retracted posture can be increased in order to widely open the front portion of the locking transfer device. Further, the divider is stored in a state of being supported on the upper surface of the cover member. As a result, the divider can be stably held in the retracted posture without providing a fixture for fixing the divider in the retracted posture.

Further, in the present invention, it is preferable that the cover member is configured so that the posture can be changed into a closed posture that covers the locking transport device from above and an open posture that opens the locking transport device upward.

According to this feature configuration, the locking transfer device is opened upward by changing the posture of the cover member from the closed posture to the open posture. As a result, maintenance of the locking transfer device can be performed more easily.

Further, in the present invention, the cover member changes its posture between the closed posture and the open posture by swinging up and down around a swing axis extending in the left-right direction with the rear portion of the cover member as a fulcrum. It is preferable that the configuration is possible.

According to this feature configuration, it is possible to easily configure a configuration in which the cover member can be changed into a closed posture and an open posture by a simple configuration in which the cover member is swung up and down at a rear fulcrum.

Further, in the present invention, it is preferable that the cover member is configured so that the divider can change its posture to the open posture in the retracted posture.

According to this feature configuration, the divider is stored when the cover member is opened and the posture is changed to the posture. As a result, when the cover member is opened and the posture is changed to the posture, the divider is less likely to interfere with the posture change work.

Further, in the present invention, a guide mechanism for guiding the cover member over the closed posture and the open posture is provided, and the guide mechanism has a guide member having a guide hole extending in the front-rear direction, and one end portion. Is provided with a rod-shaped member that is swingably supported by the cover member and the other end of which is movably supported by the guide member along the guide hole, and corresponds to the opening posture of the guide hole. It is preferable that a locking portion is formed in the portion to which the other end of the rod-shaped member is locked.

According to this feature configuration, the cover member is guided in the closed posture and the open posture by the guide mechanism, so that the posture of the cover member can be smoothly changed between the closed posture and the open posture. Further, by locking the other end of the rod-shaped member to the locking portion, the cover member can be stably held in the open posture.

Further, in the present invention, a frame for supporting the cover member is provided below the cover member, and a fixture for fixing the cover member in the closed posture over the front end portion of the cover member and the frame. It is preferable that the fixture is provided so that the divider is covered from above by the divider in the state of use and the divider is exposed in the state of the retracted position.

According to this feature configuration, the cover member can be stably held in the closed posture by fixing the cover member in the closed posture by the fixture. In addition, since the fixture is covered from above by the divider while the divider is in the working position, the fixture can be protected from contact with the field and damaged during the harvesting operation. .. Further, since the fixture is exposed while the divider is in the retracted posture, it is easy to reach the fixture by changing the posture of the divider to the retracted posture.

It is the right side view which shows the corn harvester. It is a top view which shows the corn harvester. It is a bottom view which shows the pre-harvest processing apparatus. It is a bottom view which shows the harvesting unit. It is a front view which shows the pre-harvest processing apparatus. It is a top view which shows the harvesting unit. It is a right side sectional view showing a harvesting unit. It is a right side view which shows a harvesting unit. It is a right side sectional view which shows the state which the inner divider is put into a retracted posture, and the inner cover member is put into an open posture. It is a front view which shows the state which the inner divider is put into a retracted posture, and the inner cover member is put into an open posture. It is a right side sectional view which shows the state in which the inner divider is in a retracted posture, and the inner cover member is in a closed posture. It is a front view which shows the state which put the inner divider in a retracted posture, and put the inner cover member in a closed posture. It is a right side view which shows the state which the outer divider is in the retracted posture. It is the right side sectional view which shows the grounding part.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is "front of the aircraft", the direction of arrow B is "rear of the aircraft", the direction of arrow L is "left of the aircraft", and the direction of arrow R is "right of the aircraft". One ".

[Overall composition of corn harvester]
1 and 2 show a corn harvester. The corn harvester is provided with a traveling machine 1. The traveling machine body 1 is provided with a body frame 2 and a crawler traveling device 3. A pre-harvest processing device 4 is provided in front of the traveling machine 1.

A threshing device 5 for threshing (peeling and removing grains) of corn tufts is provided. A feeder 6 for transporting the corn tufts toward the threshing device 5 is provided across the pre-harvest treatment device 4 and the threshing device 5. The feeder 6 is supported by the front portion of the threshing device 5 so as to be vertically swingable. On the right side of the threshing device 5, a grain tank 7 for storing the grains obtained by the threshing process is provided. An operating cabin 8 is provided in front of the grain tank 7. A grain discharge device 9 for discharging grains in the grain tank 7 is provided.

[Pre-harvest treatment equipment]
As shown in FIGS. 1 to 6, the harvesting pretreatment device 4 includes a plurality of harvesting units U, a scraping auger 10, a plurality of cover members 11, a plurality of dividers 12, and left and right side covers 13. And a pre-harvest processing frame 14. The pre-harvest processing frame 14 supports a plurality of harvesting units U, a scraping auger 10, a plurality of cover members 11, a plurality of dividers 12, left and right side covers 13, and the like.

The left-right width W1 of the pre-harvest processing device 4 is wider than the left-right width W2 of the crawler traveling device 3. On the left and right side portions of the left and right width W1 of the harvest pretreatment device 4, each portion is secured so as to protrude to the lateral side of the machine body with respect to the left and right width W2 of the crawler traveling device 3.

The harvesting unit U is provided with left and right locking transfer devices 15, left and right harvesting rolls 16, cutting devices 17, and a harvesting unit frame 18. That is, a harvesting unit U having a left and right locking transfer device 15, a left and right harvesting roll 16, a cutting device 17, and a harvesting unit frame 18 is configured. In this embodiment, three harvesting units U are provided so as to be arranged in the left-right direction. In one harvesting unit U, the left and right harvesting rolls 16 are arranged between the left and right locking transport devices 15. The harvesting unit frame 18 supports left and right locking transfer devices 15, left and right harvesting rolls 16, cutting devices 17, and the like.

The left and right locking and transporting devices 15 lock and transport the corn tufts toward the rear. A transport path C for transporting the corn tufts is formed between the left and right locking transport devices 15. The locking transfer device 15 is composed of an endless rotating body type transfer device. The locking transfer device 15 includes a driven sprocket 19 provided at the front portion of the locking transfer device 15, a drive sprocket 20 provided at the rear portion of the locking transfer device 15, and a transfer wound around the driven sprocket 19 and the drive sprocket 20. A chain 21 and the like are provided. The transport chain 21 is provided with a plurality of locking portions 21a that act on the corn tufts.

The left and right harvest rolls 16 pull down the planted stalks introduced into the transport path C between the left and right locking transport devices 15 from both the left and right sides, thereby pulling the corn tufts from the planted stalks. Separate. The harvest roll 16 on the left side is provided below the locking transfer device 15 on the left side in a state of extending along the front-rear direction. The harvest roll 16 on the right side is provided below the locking transfer device 15 on the right side in a state of extending along the front-rear direction.

The harvesting roll 16 is provided with a spiral portion 22 that acts to introduce the planted culm into the transport path C, and a blade portion 23 that acts to pull down the planted culm. The blade portion 23 is composed of a plurality of (four in this embodiment) blade bodies 23a. The amount of protrusion of the cutting edge can be changed by sliding the blade 23a in a direction orthogonal to the rotation axis Y1 direction of the harvesting roll 16.

The cutting device 17 cuts the planted culm. The cutting device 17 is provided below the harvest roll 16 on the right side. The cutting device 17 is composed of a rotary blade that is rotationally driven in the direction of arrow A around the center of rotation Z1. However, the rotation direction of the rotary blade may be the direction opposite to the arrow A around the rotation axis Z1. The cutting device 17 is provided with a pair of free blades 24 and a support portion 25 that swingably supports the pair of free blades 24.

The scraping auger 10 scrapes the corn tufts transported by the locking transfer device 15 toward the rear. The scraping auger 10 is provided behind the locking transfer device 15. The scraping auger 10 is erected on the left and right side walls 26 of the pre-harvest processing frame 14.

The pre-harvest processing frame 14 is provided with left and right side walls 26 and left and right side walls 26, a bottom plate 27 that covers the scraping auger 10 from below and rear, and left and right vertical frames 28 that support the rear portion of the bottom plate 27. And are provided. The bottom plate 27 is provided with a bottom portion 27a located below the scraping auger 10 and a rear wall 27b located behind the scraping auger 10.

As shown in FIGS. 4, 6 and 7, a connecting frame 29 for connecting the one harvesting unit frame 18 and the other harvesting unit frame 18 in the adjacent harvesting units U is provided. The connecting frame 29 includes a front frame 30, an upper intermediate frame 31, a lower intermediate frame 32, and a rear frame 33.

The front frame 30 is provided over the front portion of one harvesting unit frame 18 and the front portion of the other harvesting unit frame 18 in the adjacent harvesting units U. The upper intermediate frame 31 is provided over the upper portion of the front-rear intermediate portion of one harvesting unit frame 18 and the upper portion of the front-rear intermediate portion of the other harvest unit frame 18 in the adjacent harvesting units U. The lower intermediate frame 32 is provided over the lower portion of the front-rear intermediate portion of one harvesting unit frame 18 and the lower portion of the front-rear intermediate portion of the other harvest unit frame 18 in the adjacent harvesting units U. The rear frame 33 is provided over the rear portion of one harvesting unit frame 18 and the rear portion of the other harvesting unit frame 18 in the adjacent harvesting units U.

[Protective member]
As shown in FIGS. 3 to 6, protection for protecting the front end of the locking transport device 15 and the front end of the harvest roll 16 below the front end of the locking transport device 15 and in front of the front end of the harvest roll 16. A member 34 is provided. In the present embodiment, the harvest pretreatment device 4 is provided with four protective members 34. Specifically, as the protection member 34, the outer protection member 35 located at the left end, the outer protection member 35 located at the right end, and the left and right inner protection members 36 located between the left and right outer protection members 35 It is equipped. The left and right outer protection members 35 have a symmetrical structure. The left and right inner protection members 36 have the same configuration.

The left outer protective member 35 is provided below the front end of the left locking transport device 15 in the leftmost harvesting unit U and in front of the front end of the left harvest roll 16. The right outer protection member 35 is provided below the front end of the right locking transfer device 15 in the rightmost harvesting unit U and in front of the front end of the right harvest roll 16.

The left inner protective member 36 is located below the front end of the right locking transport device 15 in the leftmost harvesting unit U and in front of the front end of the right harvesting roll 16 and the left locking transport in the middle harvesting unit U. It is provided below the front end of the device 15 and beyond the front of the front end of the harvest roll 16 on the left side. In other words, the inner protection member 36 on the left side is provided over the transport path C in the leftmost harvesting unit U and the transport path C in the middle harvesting unit U. That is, the inner protection member 36 on the left side is provided over one transport path C and the other transport path C in the adjacent harvesting units U.

The right inner protection member 36 is located below the front end of the right locking transport device 15 in the middle harvesting unit U and in front of the front end of the right harvesting roll 16 and on the left locking transport in the rightmost harvesting unit U. It is provided below the front end of the device 15 and beyond the front of the front end of the harvest roll 16 on the left side. In other words, the inner protection member 36 on the right side is provided over the transport path C in the harvesting unit U in the middle and the transport path C in the harvesting unit U at the right end. That is, the inner protection member 36 on the right side is provided over one transport path C and the other transport path C in the adjacent harvesting units U.

The outer protective member 35 is provided with a front surface portion 35a, a bottom portion 35b, and a lateral side portion 35c. The bottom portion 35b is formed in an inclined shape that is inclined forward. The lateral side portion 35c is formed in an inclined shape that faces the transport path C and is inclined so as to approach the transport path C in the left-right direction toward the rear end of the lateral side portion 35c. The outer protective member 35 is fixed to the front end of the harvesting unit frame 18 by bolts 37.

The inner protective member 36 is provided with a front surface portion 36a, a bottom portion 36b, and left and right lateral side portions 36c. The bottom portion 36b is formed in an inclined shape that is inclined forward. The lateral side portion 36c is formed in an inclined shape that faces the transport path C and is inclined so as to approach the transport path C in the left-right direction toward the rear end of the lateral side portion 36c. The inner protective member 36 is fixed to the front end portion of one harvesting unit frame 18 and the front end portion of the other harvesting unit frame 18 in the adjacent harvesting units U by bolts 37.

[Cover member]
As shown in FIG. 2, the cover member 11 covers the locking transfer device 15 from above. In the present embodiment, the harvest pretreatment device 4 is provided with four cover members 11. Specifically, as the cover member 11, the outer cover member 38 located at the left end, the outer cover member 38 located at the right end, and the left and right inner cover members 39 located between the left and right outer cover members 38 are It is provided. The left and right outer cover members 38 have a symmetrical structure. The left and right inner cover members 39 have the same configuration.

The left outer cover member 38 is provided above the left locking transport device 15 in the leftmost harvesting unit U so as to cover the left locking transporting device 15 in the leftmost harvesting unit U from above. The right outer cover member 38 is provided above the right locking transport device 15 in the rightmost harvesting unit U so as to cover the right locking transport device 15 in the rightmost harvesting unit U from above.

The left inner cover member 39 covers the right locking transport device 15 in the leftmost harvesting unit U and the left locking transport device 15 in the middle harvesting unit U from above, and the right side in the leftmost harvesting unit U. It is provided above the locking transport device 15 on the left side of the locking transport device 15 and the harvesting unit U in the middle. The right inner cover member 39 covers the right locking transport device 15 in the middle harvesting unit U and the left locking transport device 15 in the rightmost harvesting unit U from above, and the right inner cover member 39 in the middle harvesting unit U. It is provided above the locking transfer device 15 on the left side of the locking transfer device 15 and the harvesting unit U at the right end.

As shown in FIGS. 6 to 10, the inner cover member 39 swings up and down around a swing axis X1 extending in the left-right direction with the rear portion of the inner cover member 39 as a fulcrum, thereby locking and transporting the device. The posture can be changed between a closed posture (see FIGS. 7 and 8) that covers the 15 from above and an open posture (see FIGS. 9 and 10) that opens the locking transport device 15 upward. Below the inner cover member 39, a front frame 30, an upper intermediate frame 31, and a rear frame 33 are provided so as to support the inner cover member 39. The rear frame 33 is provided with a support portion 40 that supports the rear end portion of the inner cover member 39 so that the inner cover member 39 can swing up and down around the swing axis X1.

The top of the inner cover member 39 is formed in a substantially mountain shape when viewed from the front. A top plate 39d is provided on the upper part inside the inner cover member 39. A substantially tubular portion is formed on the upper portion of the inner cover member 39 by the upper surface portion of the inner cover member 39 and the top plate 39d. Thereby, the strength of the upper part of the inner cover member 39 can be improved. Although detailed description will be omitted, a substantially tubular portion is formed on the upper portion of the outer cover member 38 as well as the upper portion of the inner cover member 39.

[Guide mechanism]
A guide mechanism 41 for guiding the inner cover member 39 in a closed posture and an open posture is provided. The guide mechanism 41 is provided with a guide member 42 and a rod-shaped member 43. The guide member 42 is supported by the upper intermediate frame 31. The guide member 42 is formed with a guide hole 42a extending in the front-rear direction. One end of the rod-shaped member 43 is swingably supported inside the inner cover member 39. Inside the inner cover member 39, a support portion 39a that swingably supports one end of the rod-shaped member 43 is provided. The other end of the rod-shaped member 43 is movably supported by the guide member 42 along the guide hole 42a. A locking portion 42b in which the other end of the rod-shaped member 43 is locked is formed in a portion of the guide hole 42a corresponding to the opening posture.

As the inner cover member 39 rises and swings around the swing axis X1, the other end of the rod-shaped member 43 moves forward along the guide hole 42a. Then, the other end of the rod-shaped member 43 is locked to the locking portion 42b while the inner cover member 39 is in the open posture, so that the inner cover member 39 is held in the open posture.

〔Fixture〕
A fixture 44 for fixing the inner cover member 39 in a closed posture is provided over the front end portion of the inner cover member 39 and the front frame 30. A hooking portion 39b on which the fixture 44 is hooked is provided at the front end portion of the inner cover member 39.

When the fixture 44 is hooked on the hook portion 39b, the inner cover member 39 is fixed in the closed posture. Then, by releasing the hooking of the fixing tool 44 on the hooking portion 39b, the inner cover member 39 can be swung up and down around the swing axis X1.

[Divider]
As shown in FIGS. 2 to 5, the divider 12 introduces the planted culm into the transport path. In the present embodiment, the pre-harvest treatment apparatus 4 is provided with four dividers 12. Specifically, the divider 12 includes an outer divider 45 located at the left end, an outer divider 45 located at the right end, and left and right inner dividers 46 located between the left and right outer dividers 45. The left and right outer dividers 45 have a symmetrical configuration. The left and right inner dividers 46 have the same configuration.

The divider 12 is provided with a divider main body 47 and a grounding portion 48 that can be grounded. A corner portion 47c is formed by a rising surface 47a and an inclined surface 47b of the divider main body 47 so as to easily cause a planted culm in an inverted state.

The left outer divider 45 is provided so as to be continuous with the front end portion of the left outer cover member 38 and to project forward from the left locking transport device 15 in the leftmost harvesting unit U. The outer divider 45 on the right side is provided so as to be continuous with the front end portion of the outer cover member 38 on the right side and project forward from the locking transfer device 15 on the right side in the harvesting unit U at the right end.

The left inner divider 46 is continuous with the front end of the left inner cover member 39 and is in front of the right locking transport device 15 in the leftmost harvesting unit U and the left locking transport device 15 in the middle harvesting unit U. It is provided in a protruding state. The right inner divider 46 is continuous with the front end of the right inner cover member 39 and is in front of the right locking transport device 15 in the middle harvesting unit U and the left locking transport device 15 in the rightmost harvesting unit U. It is provided in a protruding state.

The outer divider 45 on the left side and the inner divider 46 on the left side introduce the planting culm into the transport path C in the harvesting unit U on the left side. The left and right inner dividers 46 introduce the planted culm into the transport path C in the middle harvesting unit U. The inner divider 46 on the right side and the outer divider 45 on the right side introduce the planting culm into the transport path C in the harvesting unit U on the right side.

As shown in FIGS. 7, 8, 11 and 12, the inner divider 46 swings up and down around a swing axis X2 extending in the left-right direction with the rear end of the inner divider 46 as a fulcrum. As a result, the posture can be changed between the usage posture (see FIGS. 7 and 8) located in front of the inner cover member 39 and the retracted posture (see FIGS. 11 and 12) located above the inner cover member 39. There is. The inner divider 46 is in contact with the upper surface of the inner cover member 39 from above in the retracted posture. A support portion 39c for supporting the rear end portion of the inner divider 46 is provided above the front end portion of the inner cover member 39 so that the inner divider 46 can swing up and down around the swing axis X2.

Here, the fixture 44 is covered from above by the inner divider 46 with the inner divider 46 in the used posture, and the inner divider 46 is exposed in the retracted posture. When the fixture 44 is exposed while the inner divider 46 is in the retracted posture, the hook 44 can be released from the hook portion 39b, and the inner cover member 39 can be changed to the open posture. That is, the inner cover member 39 is configured so that the inner divider 46 can change its posture to the open posture in the retracted posture.

As shown in FIG. 13, the outer divider 45 swings up and down around the swing axis X2 extending in the left-right direction with the rear end of the outer divider 45 as a fulcrum, thereby moving forward of the outer cover member 38. It is configured so that the posture can be changed between the used posture in position and the retracted posture located above the outer cover member 38. The outer divider 45 is in contact with the upper surface of the side cover 13 from above in the retracted posture. A support portion 38a for supporting the rear end portion of the outer divider 45 is provided above the front end portion of the outer cover member 38 so that the outer divider 45 can swing up and down around the swing axis X2.

Here, as shown in FIGS. 8 and 13, the locking transfer device 15 extends rearward from a position on the front side of the swing axis X2. The front end of the locking transfer device 15 (the front end of the movement locus of the tip of the locking portion 21a) is located on the front side of the swing axis X2. In the front-rear direction, the position of the front portion of the locking transfer device 15 and the position of the rear portion of the divider 12 overlap. The driven sprocket 19 is located on the front side of the swing axis X2.

The harvesting roll 16 extends rearward from a position between the front end of the locking transfer device 15 and the swing axis X2. The front end of the spiral portion 22 is located on the front side of the swing axis X2 and on the rear side of the rotation axis Z2 of the driven sprocket 19.

As shown in FIGS. 4 and 14, the ground contact portion 48 is provided at the front end portion of the divider main body portion 47. A fitting portion 47d into which the grounding portion 48 is fitted is provided at the front end portion of the divider main body portion 47. The grounding portion 48 is fixed by bolts 49 in a state of being fitted into the fitting portion 47d from below. That is, the grounding portion 48 is configured to be detachable from the divider main body portion 47.

The ground contact portion 48 is formed in a tapered shape in a plan view. The bottom portion of the ground contact portion 48 is formed in a curved shape that bulges downward in a side view. During the harvesting operation, the ground contact portion 48 touches the ground and a pushing force acts on the divider 12, so that the divider 12 rises and swings.

As shown in FIG. 7, an adjusting mechanism 50 capable of adjusting the height position of the lower end of the divider 12 is provided. FIG. 7 shows an adjusting mechanism 50 capable of adjusting the height position of the lower end of the inner divider 46. The adjusting mechanism 50 is provided at the rear end portion of the inner divider 46, and is provided with left and right contact members 51 that project toward the front end portion of the inner cover member 39 and come into contact with the front end portion of the inner cover member 39. .. The contact member 51 is configured so that the amount of protrusion (the length of protrusion from the rear end portion of the inner divider 46 to the front end portion side of the inner cover member 39) can be changed. In the present embodiment, the contact member 51 is composed of a bolt-shaped member. A nut 52 for fixing the position of the abutting member 51 is externally fitted to the abutting member 51.

The height position of the lower end of the inner divider 46 is adjusted according to the amount of protrusion of the contact member 51. Specifically, as the protrusion amount of the contact member 51 becomes shorter, the height position of the lower end of the ground contact portion 48 becomes lower. On the other hand, as the protrusion amount of the contact member 51 becomes longer, the height position of the lower end of the ground contact portion 48 becomes higher.

Although the adjustment mechanism 50 capable of adjusting the height position of the lower end of the inner divider 46 has been described here, the adjustment mechanism 50 capable of adjusting the height position of the lower end of the outer divider 45 also has the lower end of the inner divider 46. It can be understood in the same manner as the adjusting mechanism 50 in which the height position of the above can be adjusted.

[Side cover]
As shown in FIGS. 2 and 5, the left side cover 13 is the leftmost locking transfer device 15 (leftmost locking transfer device 15) in the leftmost harvesting unit U behind the left outer divider 45. It is provided on the left side (left and right outside). The right side cover 13 is. Behind the outer divider 45 on the right side, it is provided on the right side (left and right outer side) of the rightmost locking transport device 15 (rightmost locking transport device 15) in the rightmost harvesting unit U.

..
As shown in FIG. 13, the side cover 13 is provided with a main body cover portion 53 and an upper cover portion 54 that covers the main body cover portion 53 from above. The upper cover portion 54 is configured to be vertically swingable around a swing axis X3 extending in the left-right direction with the front end portion of the upper cover portion 54 as a fulcrum. A support portion 38b that supports the front end portion of the upper cover portion 54 is provided on the upper portion of the outer cover member 38 so that the upper cover portion 54 can swing up and down around the swing axis X3.

A height changing mechanism 55 that can change the height of the side cover 13 is provided. The height changing mechanism 55 includes front and rear bolts 56 provided over the lateral side of the upper cover portion 54 and the lateral portion of the main body cover portion 53, and bolts formed on the lateral side of the upper cover portion 54. It is provided with elongated holes 54a before and after the 56 is inserted. The height of the side cover 13 is changed by the upper cover portion 54 swinging up and down within the range of the elongated hole 54a.

[Another Embodiment]
(1) In the above embodiment, the inner divider 46 is supported by the front end portion of the inner cover member 39 so that it can swing up and down around the swing axis X2. Further, the outer divider 45 is supported by the front end portion of the outer cover member 38 so that it can swing up and down around the swing axis X2. However, the inner divider 46 may be supported by the rear portion of the inner cover member 39 via a stay or the like so that the inner divider 46 can swing up and down around the swing axis extending in the left-right direction. Further, the outer divider 45 may be supported by the rear portion of the outer cover member 38 via a stay or the like so that the outer divider 45 can swing up and down around the swing axis extending in the left-right direction.

Alternatively, the inner divider 46 may be configured so that the posture can be changed between the used posture and the retracted posture by a link mechanism instead of the swing mechanism. Further, the outer divider 45 may be configured so that the posture can be changed between the used posture and the retracted posture by a link mechanism instead of the swing mechanism.

(2) In the above embodiment, the inner divider 46 is in contact with the upper surface of the inner cover member 39 from above in the retracted posture. Further, the outer divider 45 is in contact with the upper surface of the side cover 13 from above in the retracted posture. However, the inner divider 46 does not have to be in contact with the upper surface of the inner cover member 39 from above in the retracted posture. Further, the outer divider 45 does not have to be in contact with the upper surface of the side cover 13 from above in the retracted posture.

(3) In the above embodiment, the inner cover member 39 is configured to be able to change its posture into a closed posture and an open posture by swinging up and down around the swing axis X1 with the rear portion of the inner cover member 39 as a fulcrum. Has been done. However, the inner cover member 39 may be configured so that the posture can be changed to a closed posture and an open posture by a link mechanism instead of the swing mechanism. Alternatively, the inner cover member 39 may be configured so that the posture cannot be changed between the closed posture and the open posture.

(4) In the above embodiment, the locking portion 42b is formed in the portion of the guide hole 42a corresponding to the opening posture. However, the locking portion 42b may not be formed in the portion of the guide hole 42a corresponding to the opening posture. Alternatively, the guide member 42 may be formed with a locking hole in which the other end of the rod-shaped member 43 is locked in the open posture instead of the guide hole 42a.

(5) In the above embodiment, the fixture 44 is composed of a member that is hooked on the hook portion 39b. However, the fixture 44 may be composed of bolts that fix the front end portion of the inner cover member 39 to the front frame 30.

(6) The present invention is not limited to the above-described embodiment and the above-mentioned other embodiment, and various other modifications can be made. Further, as long as there is no contradiction, it is possible to combine the configurations according to the above-described embodiment and the above-mentioned other embodiments.

The present invention can be used in a pre-harvest treatment apparatus for a corn harvester.

4 Pre-harvest treatment device 11 Cover member 12 Divider 15 Locking transfer device 16 Harvest roll 30 Front frame (frame)
41 Guide mechanism 42 Guide member 42a Guide hole 42b Locking part 43 Rod-shaped member 44 Fixture C Transport path X2 Swing axis X3 Swing axis

Claims (8)

Left and right locking transport devices that lock and transport the corn tufts backwards,
From the planting stalk, the planting stalk is pulled down from both the left and right sides with respect to the planting stalk provided below the locking transport device and introduced into the transport path between the left and right locking transport devices. Left and right harvest rolls that separate the corn tufts,
Left and right cover members provided above the locking transport device and covering the locking transport device from above,
The left and right dividers are provided so as to be continuous with the front end portion of the cover member and project to the front side of the locking transport device, and to introduce the planted stalk into the transport path.
The divider is a pre-harvest processing device for a corn harvester, which is configured to be able to change its posture between a usage posture located in front of the cover member and a storage posture located above the cover member. The divider is configured to be able to change its posture between the used posture and the retracted posture by swinging up and down around a swinging axis extending in the left-right direction with the rear portion of the divider as a fulcrum. The pre-harvest treatment apparatus for the corn harvester according to 1. The pre-harvest treatment apparatus for a corn harvester according to claim 1 or 2, wherein the divider is in contact with the upper surface of the cover member from above in the retracted posture. The cover member according to any one of claims 1 to 3, wherein the cover member can be changed into a closed posture that covers the locking transport device from above and an open posture that opens the locking transport device upward. The corn harvester described pre-harvest treatment equipment. The cover member is configured to be able to change its posture between the closed posture and the open posture by swinging up and down around a swinging axis extending in the left-right direction with the rear portion of the cover member as a fulcrum. The pre-harvest processing apparatus for the corn harvester according to claim 4. The pre-harvest treatment apparatus for a corn harvester according to claim 4 or 5, wherein the cover member is configured so that the divider can change its posture to the open posture in the retracted posture. A guide mechanism for guiding the cover member between the closed posture and the open posture is provided.
The guide mechanism has a guide member having a guide hole extending in the front-rear direction, one end of which is swingably supported by the cover member, and the other end of which is movable to the guide member along the guide hole. A rod-shaped member to be supported, and
The corn harvest according to any one of claims 4 to 6, wherein a locking portion for locking the other end of the rod-shaped member is formed in a portion of the guide hole corresponding to the opening posture. Machine harvest pretreatment equipment. A frame for supporting the cover member is provided below the cover member.
A fixture for fixing the cover member in the closed posture is provided over the front end portion of the cover member and the frame.
The corn harvesting according to any one of claims 4 to 7, wherein the fixture is covered from above by the divider in the used posture, and the divider is exposed in the retracted posture. Machine harvest pretreatment equipment.

Images